Shooting Sports USA - August 2018 - 31

MODIFIED MONO-VISION WITH
THE NON-SHOOTING EYE
Once the best lens is determined for the shooting eye, what do we do with the non-shooting
eye? I don't believe any eye doctor who
doesn't shoot will have any idea what to do (or
care), however this is very important. A patient
who came to see me for a second opinion
about his shooting Rx said his previous doctor
asked him what to do with the opposite eye.
Would the preference be the distance prescription or using the same add as the shooting
lens? The answer is generally neither.
Shooters would like to see off to the
distance without changing eyeglasses. This is
especially important for seeing well enough to
distinguish their target numbers and not crossfire. However, having one lens for far and
the other lens near may be difficult to adjust,
and cause the feeling of disorientation. Trial
lenses on a trial frame will demonstrate exactly
whether this will work or not. I have found
that the full distance Rx for the non-shooting
eye will not work, therefore a modification
is needed. Usually, altering the power for

the non-shooting eye by +0.25, to +0.50 at
most, will allow this "modified mono-vision"
technique to be workable. Very happy shooting
patients! They now see the sight picture well
with the shooting eye, see down-range well
with the non-shooting eye, and they can do
both in comfort.
For those who cannot keep both eyes
opened for shooting without covering the
non-shooting eye, one choice would be a flipdown occluder. Another choice would be a
small piece of translucent scotch tape placed
over the lens of the non-shooting eye so the
sight picture would not be disturbed for the
shooting eye. Closing the lid would not be
recommended for precision shooting and
similar types of competitions.
Progressive lenses are never recommended
for seeing iron sights. Many shooters would
be happy with single vision lenses, but if there
is a need for better close-up vision to be able
to score, load magazines, use an overlay and
so on, then a simple standard bifocal may
work well. The position of the bifocal segment
must be placed lower than normal to avoid
interference with the sight picture. As the
shooter becomes fatigued, so too may the

PHOTO BY USA SHOOTING

loss of front sight clarity, or very minimal loss.
Center hold, six o'clock hold, or sub-six hold
may affect the shooter's decision. The preferable sight picture appearance chosen cannot
be demonstrated by the use of a reading card.
The shooting patient would be able to see the
exact sight picture before getting their shooting
glasses. There's no buyer's remorse.
As Jim O'Young discussed with Dr. Wong,
"It's amazing that shooters may spend thousands of dollars for their equipment but totally
ignore their vision. You can't hit what you can't
see, and seeing depends on your eyes and the
quality of your vision."

Another close up of USA Shooting's Alexis Lagan and
her eye wear for international pistol competition

SSUSA.ORG | AUGUST 2018

31


http://www.SSUSA.ORG

Table of Contents for the Digital Edition of Shooting Sports USA - August 2018

Contents
Shooting Sports USA - August 2018 - Cover1
Shooting Sports USA - August 2018 - Cover2
Shooting Sports USA - August 2018 - 3
Shooting Sports USA - August 2018 - 4
Shooting Sports USA - August 2018 - 5
Shooting Sports USA - August 2018 - Contents
Shooting Sports USA - August 2018 - 7
Shooting Sports USA - August 2018 - 8
Shooting Sports USA - August 2018 - 9
Shooting Sports USA - August 2018 - 10
Shooting Sports USA - August 2018 - 11
Shooting Sports USA - August 2018 - 12
Shooting Sports USA - August 2018 - 13
Shooting Sports USA - August 2018 - 14
Shooting Sports USA - August 2018 - 15
Shooting Sports USA - August 2018 - 16
Shooting Sports USA - August 2018 - 17
Shooting Sports USA - August 2018 - 18
Shooting Sports USA - August 2018 - 19
Shooting Sports USA - August 2018 - 20
Shooting Sports USA - August 2018 - 21
Shooting Sports USA - August 2018 - 22
Shooting Sports USA - August 2018 - 23
Shooting Sports USA - August 2018 - 24
Shooting Sports USA - August 2018 - 25
Shooting Sports USA - August 2018 - 26
Shooting Sports USA - August 2018 - 27
Shooting Sports USA - August 2018 - 28
Shooting Sports USA - August 2018 - 29
Shooting Sports USA - August 2018 - 30
Shooting Sports USA - August 2018 - 31
Shooting Sports USA - August 2018 - 32
Shooting Sports USA - August 2018 - 33
Shooting Sports USA - August 2018 - 34
Shooting Sports USA - August 2018 - 35
Shooting Sports USA - August 2018 - 36
Shooting Sports USA - August 2018 - 37
Shooting Sports USA - August 2018 - 38
Shooting Sports USA - August 2018 - 39
Shooting Sports USA - August 2018 - 40
Shooting Sports USA - August 2018 - 41
Shooting Sports USA - August 2018 - 42
Shooting Sports USA - August 2018 - 43
Shooting Sports USA - August 2018 - 44
Shooting Sports USA - August 2018 - 45
Shooting Sports USA - August 2018 - 46
Shooting Sports USA - August 2018 - 47
Shooting Sports USA - August 2018 - 48
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